<!DOCTYPE html>
<html class="reftest-wait">
<script>
var context = new window.AudioContext();
var source = context.createBufferSource();
source.connect(context.destination);
source.playbackRate.value = 0.01;
source.buffer = context.createBuffer(2, 32, context.sampleRate);
source.start(0);

setTimeout(
    function() {
        source.buffer = context.createBuffer(1, 10, context.sampleRate);
        source.playbackRate.value = 1;
        source.onended =
            function() {
                document.documentElement.removeAttribute("class");
            };
    }, 0);

</script>
</html>
